Preston, Daniel
Current rating: 1295
Record: 13-28
| Grand Prix Denver 2019 (M20 standard) | starting rating: 1356 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 87 | Tams, Brian (1475) | Lost 1-2 | -151341 |
| 2standard | 197 | Bracken, Nicholas (1499) | Lost 1-2 | -161325 |
| 3standard | 304 | Kirchmer, Kevin (1519) | Lost 0-2 | -141311 |
| 4standard | 290 | Moore, Brian (1447) | Lost 0-2 | -161295 |
| top | average opponent: 1485record: 0-4 | new rating: 1295 | ||
| Grand Prix Oakland 2019 (modern) | starting rating: 1372 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 186 | Olson, Alex 0825 (1894) | Lost 0-2 | -91363 |
| 2modern | 433 | Richards, Joey (1482) | Lost 0-2 | -161347 |
| 3modern | 492 | Li, Chris (1729) | Lost 0-2 | -111336 |
| 4modern | 514 | Campbell, Patrick (1484) | Won 2-0 | +201356 |
| top | average opponent: 1647record: 1-3 | new rating: 1356 | ||
| Grand Prix Sacramento 2018 (M19 limited) | starting rating: 1397 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 235 | Crocker, Alex (1500) | Lost 1-2 | -161381 |
| 2sealed | 480 | Mai, John (1462) | Won 2-0 | +191400 |
| 3sealed | 378 | Severson, Steele (1503) | Lost 1-2 | -161384 |
| 4sealed | 429 | Hu, Shengling (1720) | Lost 0-2 | -121372 |
| top | average opponent: 1546record: 1-3 | new rating: 1372 | ||
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1384 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 483 | Huss, Malcolm (1500) | Lost 0-2 | -161368 |
| 2modern | 848 | Taran, Nicole (1507) | Won 2-0 | +201388 |
| 3modern | 579 | Brune, Ian (1455) | Won 2-0 | +201408 |
| 4modern | 500 | Napolitano, Joseph (1611) | Lost 0-2 | -151393 |
| 5modern | 733 | Lang, Nicholas (1501) | Won 2-1 | +201413 |
| 6modern | 518 | Jose, Christopher (1518) | Lost 0-2 | -161397 |
| top | average opponent: 1515record: 3-3 | new rating: 1397 | ||
| Grand Prix Denver 2017 (HOU standard) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 59 | Steele, Carly (1324) | Lost 0-2 | -201455 |
| 2standard | 423 | Means, Ben (1482) | Lost 1-2 | -181437 |
| 3standard | 513 | Enns, Galen (1428) | Won 2-0 | +181455 |
| 4standard | 448 | Walterscheid, Corby (1576) | Lost 1-2 | -161439 |
| 5standard | 518 | Arellano, Efren (1317) | Won 2-1 | +161455 |
| 6standard | 442 | Schmitt, David (1449) | Lost 1-2 | -181437 |
| 7standard | 409 | Bugg, Abel (1418) | Lost 1-2 | -191418 |
| 8standard | 377 | Stark, Colten (1453) | Lost 0-2 | -171401 |
| 9standard | 318 | Carlson, Cory (1443) | Lost 1-2 | -171384 |
| top | average opponent: 1432record: 2-7 | new rating: 1384 | ||
| Grand Prix Denver 2016 (KLD standard) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 362 | St-Julien, Christen (1560) | Lost 0-2 | -161450 |
| 2standard | 519 | Allen, Donaidh (1481) | Won 2-1 | +181468 |
| 3standard | 456 | Tillman, Casey (1527) | Won 2-1 | +201488 |
| 4standard | 335 | Darrow, Elliot (1516) | Lost 0-2 | -181470 |
| 5standard | 419 | Blackmon, Connor (1499) | Lost 0-0 | -171453 |
| 6standard | 561 | Weiler, Colin (1531) | Won 2-0 | +191472 |
| 7standard | 489 | Epstein, Phillip (1540) | Won 2-1 | +191491 |
| 8standard | 313 | Pastorinni, Luckas (1604) | Lost 1-2 | -161475 |
| top | average opponent: 1532record: 4-4 | new rating: 1475 | ||
| Grand Prix Minneapolis 2005 (Kamigawa block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 124 | Docken, Corey (1500) | Lost 1-2 | -181482 |
| 2block | 123 | Keefer, Matt (1483) | Won 2-0 | +181500 |
| 3block | 102 | Pannell, Thomas (1550) | Lost 0-2 | -171483 |
| 4block | 159 | Heaser, Brent (1554) | Lost 0-2 | -171466 |
| 5block | 144 | Zeimentz, Mike (1464) | Won 2-1 | +181484 |
| 6block | 112 | Tang, Jason (1482) | Lost 1-2 | -181466 |
| top | average opponent: 1506record: 2-4 | new rating: 1466 | ||